Part #

Description

M-985-01P

22-pin plastic DIP

M-985-01S

20-pin plastic SOIC

M-985-01T

20-pin plastic SOIC,Tape and Reel

www.clare.com

DS-M985-01-R1

M-985-01

Precise Call Progress and

Special Information Tone Generator

1

Features

Applications

Description

The M-985-01 is an integrated circuit precise tone

detector for call progress and special information

tones (SIT), as defined by CCITT.

The use of integrated circuit techniques allows the

M-985-01 to pack the eight filters for call progress

detection into a single 22-pin DIP or a 20-pin SOIC. A

3.58 MHz crystal-controlled time base guarantees

accuracy and repeatability.

The M-985-01 combines the call progress detection of

the M-982-02 and the SIT detection of the M-984-02.

It has an operating voltage range down to 3V. It has

low power consumption under normal operating con-

ditions. A power down (PD) feature is provided to fur-

ther reduce power consumption when inactive.

Block Diagram

Pin Diagram

Ordering Information